PEOPLE found out for you at Monday's Hollywood Film Awards – and we had a photo booth to document all of the behind-the-scenes action at the Beverly Hilton.

Among the first to work it for the cameras: Hollywood Supporting Actor Award honoree Jake Gyllenhaal, who was recognized for his work in Prisoners. Next up? Before Midnight costars (and Hollywood Screenwriter Award recipients) Ethan Hawke and Julie Delpy, who were photo-bombed by none other than Jack Black. (Aren't you glad what happens in the photo booth doesn't stay in the photo booth?)

The best parenting advice Julie Delpy has gotten since having her son Leo six months ago came from her father.

"He's like, 'Don't protect him too much. Get him a little dirty. Leave him in the yard a little bit,'" the actress tells PEOPLE. "He's a French dad, you know what I mean? He's like, 'Get them a little dirty so they protect themselves from germs.'"

Delpy, who turns 40 in December, may try to heed her father's laid-back advice, but one of her favorite activities with Leo – her first child (whose father is Delpy's boyfriend, German composer Marc Streitenfeld) – is bath time.

"I love Weleda bath soap," says the French star of Before Sunrise and 2 Days in Paris. "It makes him smell like ... a little baby."

Well here's to you, Mrs. Travolta ... We hear that Kelly Preston, 41, will appear as the sultry older woman who romances Maroon 5 lead singer Adam Levine in the upcoming video for the band's single "She Will Be Loved," a post-modern take on the 1967 film The Graduate. Director Sophie Muller initially suggested Demi Moore, but the band thought her spotlight might shine a little too brightly. Sharon Stone was another candidate, but the band thought she was too sexy for the character. Preston fit the bill, and flew to L.A. from a vacation in Florida just to shoot the video. Our spies tell us she looked beautiful and was very friendly to everyone on the set. Perhaps she looked too good – we hear that Levine's girlfriend, model Kelly McKee, who romped with the singer in the band's "This Love" video, left the set while the reportedly steamy love scenes were filming.